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Table 1 ED 6 month revisit risk stratification results

From: Prospective stratification of patients at risk for emergency department revisit: resource utilization and population management strategy implications

Characteristics Retrospective Prospective
  (Jan. 1, 2012 – Dec. 31, 2012) (Jan. 1, 2013 – Jun. 30, 2013)
  Risk score threshold Risk score threshold
  50 70 80 50 70 80
No. of ED encounters 95,785 75,593 49,109 62,189 47,235 28,166
Positive predictive value 0.614 0.696 0.83 0.597 0.669 0.794
Sensitivity 0.758 0.598 0.389 0.716 0.544 0.324
Specificity 0.639 0.802 0.94 0.608 0.781 0.931
Average ED visits in the future 6 months 2.13 2.74 4.11 2.32 3.01 4.77